Thanks again Richard it certainly is a
disadvantage to what i am doing. I just want to
be clear I understood you comment correctly. In
my case the DV is how related a person's job is
to thier formal education. So it could be that
my immigrant group maybe has a lower standard of
what an education-related job is compared to the
Canadian-born. Maybe the Canadian-born is more
picky in terms of what they think a related job
is to immigrants. Thus, comparison between these
groups is not really 100% valid. Any advantage
of immigrants, for example, could simply be due
to this different interpretation of the depedent variable?

Is there anyway to tease this out of the data?
Cause I find that the threshold parameters are
much lower for immigrants than the
canadian-born. And in these models means that
their predicated probabilities will be higher
(lower) for the highest (lowest) category. Can
I interpret this as evidence for immigrants just having a lower standard?

I'm not sure how to tease it out of the data --
it may just be an alternative explanation that is
always lurking out there. Some sources you might want to look at:

Adaptation and scale of reference bias in
self-assessments of quality of life. Wim
Groot. Journal of Health Economics 19 2000. 403?420